1Abdukakhorov Bahodir, 2Khoshimov Diyorbek, and 3Oshepkova Elvira, “DETERMINATION OF THE AMOUNT OF WORKING GAS IN THE APARTMENT USING THE GAS ANALYZER SENSOR MQ-2”, IEJRD - International Multidisciplinary Journal, vol. 6, no. 3, p. 3, May 2021.